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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: Int J Geriatr Psychiatry. 2011 May 10;27(4):382–393. doi: 10.1002/gps.2730

TABLE 5.

Average Interaction Effects, Standard Errors, and Z-Statistics across All Observations*

Mean Std. Dev. Minimum Maximum
Caregiver Distress Scale (n=1,355)
      Interaction Effect .0008811 .0005236 −.0000196 .002229
      Standard Error .0005328 .0003206 .000046 .00146
      Z statistic 1.650879 .2848747 .2064624 2.52781
Beck Depression Inventory (n=1,307)
      Interaction Effect .0012551 .0007612 −.0001396 .0033812
      Standard Error .0007363 .0004364 .0000597 .0026942
      Z statistic 1.668147 .3968817 −.7687988 2.619478
Burden Interview Scale (n=1,331)
      Interaction Effect .000066 .0000215 −2.51e−06 .000099
      Standard Error .0002656 .0001672 .0000147 .0007416
      Z statistic .3368954 .1763186 −.0034622 1.314903
Caregiver Activity Survey (n=1,313)
      Interaction Effect .0006652 .0004562 −.0001555 .001986
      Standard Error .0004511 .0002729 .0000244 .0013635
      Z statistic 1.340527 .5741552 −1.678575 2.795955
*

Derived using the INTEFF command in Stata 11.0 based on logistic regressions without random effects